Women's Responses to Adjusted Product Placement and Its Effects on Diet - 1 (WRAPPED1)

NCT03518151 | Completed

• 1 other identifier: 23361
• Study Type: interventional
• Target: 150
• Locations: 0 countries
• Sites: N/A

Brief Summary

This research project aims to help address a gap in understanding about the micro-environmental determinants of diet by exploring whether improving the placement of fresh and frozen fruit and vegetables and removing temptations of confectionary at checkouts in discount supermarkets influences the dietary behaviours of women aged 18-45 years and whether it is cost effective.

Conditions

Diet Modification

Keywords

public health; dietary inequalities; environment design

Outcome Measures

Primary Outcomes (1)

• Dietary quality score

  The primary outcome is women's dietary quality measured using a 20-item food frequency questionnaire (FFQ) to create a standardised dietary quality score (validated against 100-item FFQ and red cell folate).

  3 month follow-up post intervention commencement

Secondary Outcomes (5)

• Child's dietary quality score

  3 month follow-up post intervention commencement

• Women's daily fruit and vegetable portions

  3 month follow-up post intervention commencement

• Women's weekly confectionery intake

  3 month follow-up post intervention commencement

• Weekly sales of fresh fruit and vegetables

  12 week period following intervention commencement

• Weekly sales of confectionery

  12 week period following intervention commencement

Study Arms (2)

Intervention

EXPERIMENTAL

The intervention includes 3 components: i) creation of a new fresh fruit and vegetable section at store entrance; ii) placing frozen fruit and vegetables in the first aisle and iii) removal of all cakes, confectionary and sugar sweetened beverages from checkouts (replaced with non-food items, fruit and bottled water).

Other: Product placement intervention

Control

SHAM COMPARATOR

The control condition is provision of a limited range of fresh fruit and vegetables, all placed at the back of the store, frozen vegetables in a middle aisle and confectionery sold at checkouts.

Other: Sham comparator

Interventions

Product placement intervention OTHER

The intervention includes 3 components: i) creation of a new fresh fruit and vegetable section and island in the first aisle; ii) placing frozen fruit and vegetables in the first aisle and iii) removal of all cakes, confectionary and sugar sweetened beverages from checkouts (replaced with non-food items, fruit and bottled water).

Intervention

Sham comparator OTHER

The control condition is provision of a limited range of fresh fruit and vegetables, all placed at the back of the store, frozen vegetables in a middle aisle and confectionery sold at checkouts.

Control

Eligibility Criteria

• Age: 18 Years - 45 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Women aged 18-45 years
• Hold an store loyalty card
• Shop regularly in the 12-weeks before recruitment according to loyalty card data
• Shoppers who choose items in-store but opt for home delivery will be eligible

You may not qualify if:

• Women under the age of 18 or over 45 years
• Shopped less than once in 12-weeks prior to recruitment
• Online-only shopper
• No store loyalty card

Sponsors & Collaborators

• University Hospital Southampton NHS Foundation Trust: lead
• University of Southampton: collaborator
• Medical Research Council: collaborator

Related Publications (2)

• Stuber JM, Beulens JW, Ayala GX, Crozier SR, Dijkstra SC, Lin SF, Vogel C, Mackenbach JD. Can nudge interventions targeting healthy food purchases in real-world grocery stores reduce diet-related health disparities? A pooled analysis of four controlled trials. Int J Behav Nutr Phys Act. 2024 Dec 3;21(1):137. doi: 10.1186/s12966-024-01687-3.

  PMID: 39627771 DERIVED

• Vogel C, Crozier S, Penn-Newman D, Ball K, Moon G, Lord J, Cooper C, Baird J. Altering product placement to create a healthier layout in supermarkets: Outcomes on store sales, customer purchasing, and diet in a prospective matched controlled cluster study. PLoS Med. 2021 Sep 7;18(9):e1003729. doi: 10.1371/journal.pmed.1003729. eCollection 2021 Sep.

  PMID: 34491999 DERIVED

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: WRAPPED1 is a natural experiment with a prospective matched controlled cluster design

Study Record Dates

• First Submitted: April 25, 2018
• First Posted: May 8, 2018
• Study Start: July 6, 2016
• Primary Completion: April 30, 2017
• Study Completion: November 30, 2017
• Last Updated: May 8, 2018

Record last verified: 2018-04